Department of Chemistry Master Calendar

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This calendar includes all events from the following individual calendars: Department of Chemistry Alumni EventsDepartment Events (events of general interest and/or relevant to all research areas), and events related to specific research areas and programs (Analytical Chemistry, Chemical Biology, Chemistry-Biology Interface Training Program, Inorganic Chemistry & Materials Chemistry, Organic Chemistry, Physical Chemistry), as well as Department of Chemical and Biomolecular Engineering Seminars & Events.

 

Professor Christina W. Li, Purdue University, "Tuning Active Sites in Catalytic Nanomaterials through Colloidal Synthesis"

Event Type
Seminar/Symposium
Sponsor
Materials Chemistry
Location
Chem Annex 1024
Date
Nov 4, 2021   3:30 pm  
Contact
Chem IMP Office
E-Mail
milas2@illinois.edu
Phone
217-244-6687
Views
43
Originating Calendar
Chemistry - Inorganic/ Materials Chemistry Seminars

Abstract

Supported metal atoms and nanoparticles are found ubiquitously as heterogeneous catalysts for a wide variety of industrial, organic, and energy catalytic processes. The electronic and steric environment at the nanomaterial surface has a huge impact on the reactivity and selectivity of catalytic transformations occurring at surface active sites, but these properties are difficult to independently control through conventional materials synthetic methods. In this work, we develop molecularly-precise surface functionalization strategies in order to precisely tune both the ensemble geometry and redox properties of active site metal atoms. These strategies include 1) the adsorption of inorganic ligands on colloidal nanoparticle surfaces in order to synthesize monolayer and sub-monolayer core-shell catalysts, 2) control of bimetallic surface ensemble geometry to catalyze diastereoselective organic reactions, and 3) tuning the metal–sulfur coordination environment of single atoms supported on metal chalcogenide nanosheets for electrochemical catalysis. All of these strategies develop new structural frameworks for modulating the surface active site environment in order to access more reactive and selective nanomaterial catalysts.

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